The 7AM observation this morning at O’Hare International Airport was a -1 degree – the first time that site has recorded a sub-zero reading since a -9 degrees was registered back on February 10, 2011. Scanning the list of regularly-reporting hourly stations around the Chicago area finds the lowest reading a -5 at Waukegan.
Winds died off early this morning, so wind chill values ran mostly in the negative teens – the coldest at O’Hare has been a -15 degrees and the lowest overall a -19 degrees at DeKalb and a -18 degrees at Waukegan, Wheeling and Aurora.
Wisconsin recorded much colder readings under clear skies and over snow cover to the north – Haywood noted a low of a -23 this morning and Rhinelander recorded a -19 with a -40 degree wind chill.
Single-digit sub-zero temperatures and snow flurries covered a good portion of Lower Michigan and extreme northern Indiana where a Lake Effect Snow Advisory today called for an additional 1 to 3 inches of snow and a continuation of slippery roads and highways.
Following are some low temperatures and wind chills early this morning:
Location Low Temp Low Wind Chill
O’Hare -1 -15
Midway -1 -16
Aurora -2 -18
Waukegan -5 -18
West Chicago -3 -15
Wheeling -3 -18
Rockford -2 -15
DeKalb -3 -19
Wisconsin
Superior -17 -34
Ashland -18 -36
Rhinelander -19 -40
Green Bay -8 -29
Milwaukee -5 -27
Madison -7 -17
Iowa
Cedar Rapids -4 -18
Dubuque -5 -18
Michigan
Ann Arbor -7 -18
Jackson -6 -17
Escanaba -15 -32
Ironwood -15 -39
